I changed the AT fluid and filter on the V12’s GM400 autobox at the
weekend.
I had, so I thought, identified the locations of spacers, washers
and so forth, both from the parts catalogue and from a couple of
recent articles in Jaguar Enthusiast, so was a bit surprised when
two extra distances pieces fell on to the floor as I was
manoeuvring the cross member free. (If you haven’t done this job,
the sump can’t be removed without dismantling the crash bracket
which requires the cross member to be removed.)
I took a guess at where they might have come from and replaced
them. All was well on the subsequent test drive on Sunday morning
but this (Monday) morning I heard the odd very occasional gearbox-
to-body thump when going over a particularly vicious speed bump or
bad pothole.
Apparently my guess that the distance pieces, which were thinner
than the ones on the back cross member bolts or the ones that go
between the tie plate and the buffer plate, should be fitted
between the sump edge and the buffer plate is not correct.
Anyone done this job on their V12 ? (I guess a V12 XJS has a
pretty similar arrangement, too.) If so, did your sump have 13
bolts or (as the parts catalogue and the Jaguar Classic parts web
site show) were the two rearmost sump bolts actually studs (which
is what I think these spacers were meant to replicate.
Alternatively, why am I now getting the thumps? The cotton reel
bush was in good nick, BTW.
I’d post a picture perhaps it is quicker to indicate part number
C324587 on the Jaguar Classic parts website. This should bring up
a good diagram.–
al mclean '93 XJS 4.0 - '84 Daimler Double 6
Telford, United Kingdom
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